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What is the simplest sign of population decline?

Answer and explanation

Correct answer: Final population is less than initial population

The correct answer is D: the final population is less than the initial population. Population decline is identified by comparing the total number of people at two times. If final population < initial population, the population has declined during that period. Option A is the opposite: a larger final total indicates increase. Option B shows positive natural change because births exceed deaths, although migration could still alter the final total; it is not by itself the simplest sign of overall decline. Option C means that migration adds more people than it removes, which generally supports growth rather than decline. Option D is correct because it directly compares the two total populations. Possible causes include more deaths, fewer births, out-migration or a combination of these. Memory cue: decline means the “after” number is smaller than the “before” number.

Related tags

Population DeclineInitial PopulationFinal PopulationPopulation GrowthPopulationGeographyClass 9 Mcq

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